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Search: id:A061803
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| A061803 |
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Sum of n-th row of triangle of 4-th powers: 1; 1 16 1; 1 16 81 16 1; 1 16 81 256 81 16 1; ... |
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+0
2
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| 1, 18, 115, 452, 1333, 3254, 6951, 13448, 24105, 40666, 65307, 100684, 149981, 216958, 305999, 422160, 571217, 759714, 995011, 1285332, 1639813, 2068550, 2582647, 3194264, 3916665, 4764266, 5752683, 6898780, 8220717, 9737998
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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a(n) = n(6n^4 + 10n^2 - 1)/15. - Dean Hickerson, Jun 06 2001.
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EXAMPLE
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a(3) = 115 = 1 + 16 + 81 + 16 + 1
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CROSSREFS
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Sequence in context: A041622 A125328 A126486 this_sequence A101089 A022678 A044350
Adjacent sequences: A061800 A061801 A061802 this_sequence A061804 A061805 A061806
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KEYWORD
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nonn,easy
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 28 2001
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EXTENSIONS
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More terms from Larry Reeves (larryr(AT)acm.org) and Jason Earls (zevi_35711(AT)yahoo.com), May 28 2001
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